Improvement in dumping-cars



UNITED STATES- yP.`A'i'. r.1\i'r OFFICE.

JOHN E. BEMIS, OF CHICAGO, ILLINOIS.

i IMPROVEMENT vIN DuMPlNc-CARS.

Specilicathn l'onning part of `Letters'Patent No. 150,460, dated May 5. 1874; applicationled v February 28, 1874.

To alt whom it may concern Be it knownthat I, JOHN E. BEMIs, of Ghicago, in the county of Cook and State of Illinois, haveinvented a new and Improved Platform Dumping-Gar, of whichthe following is a specification:

In the accompanying drawing, Figure l represents abottomyiew of my improved platform detached from the car-trucks; Fig.2, a top viewof the trucks with platform detached; Fig. 3, a vertical longitudinal section on the line c c, Fig. 2, of platform and trucks; and Fig. 4., a vertical transverse section of the same on the line x a', Fig. 3.

Similar letters of reference indicate corresponding parts.

The object of my yinvention is to furnish, for the purpose of facilitating the transportation of goods, agricultural products, material for the construction "of railroads, and other articles, an improved platform dumping-car, which unloads to either side as required, by tipping and refastening the `platform automatically, on moving the engine back or forth as required. My invention consists of a movable platform, which is supportedfand firmly attached to trucks in such a manner that by turning a longitudinal rod with spiral shoulders the connection of platform and trucks is separated, and sliding cog-wheel segments thrown into gear with pinion driven in connection with the truck-axles. The motion of the trucks in either direction carries the platform sidewise till it tips by the weight of the load thereon for unloading, being carried back over the trucks by moving them in opposite directions, and locked automatically thereon by suitable mechanism, which releases the sliding segments and bolts.

A in the drawing represents a freight-car platform of the usual construction, made separate and detachable from the trucks B on which it rests, byrockers C, being also secured, hy projecting end pins c, to staples or shoulder-plates b of the supplementary platforms A at the outer end of each truck. The end platforms A and trucks B are connected by platforms and connecting-rods. The pins c,

preventthe detaching and tipping of the platform, and steady the same in carrying high and bulky loads. Platform A is, furthermore, locked to the end platforms A by sliding bolts or rods e, which enter into sockets or recesses el of the end platforms. These lock-bolts e establish the rm connection of platform and trucks till withdrawn from the end platforms. Lock-bolts e pass along the under side of the platformthrough reccssesfof the rockers G to the toothed segments D, which slide in side staples f, and are forced toward the outer ends of the platform by spiral springs f', Fig. 1. Bolts c are fastened to segments D, and slide with the same. The segments D at both ends of the platform are simultaneously moved toward each other, so as to withdraw thereby bolts c from the end platforms by spiral shoulders E of a longitudinal rod, E, which is operated by a key turned in the required direction and applied to the projecting ends. The direction in which the rod has to be turned is indicated by arrows', or other suitable manner, at the end of the platform A. A full turn of the rod carries the segments and bolts toward each other, and secures them in that position by hinged spring-dogs g, Figs. 1 and 3, which lock into notches c2 of rods e. Each toothed segment D is thereby retained in position to he engaged by a conicalV pinion, h, whichY is keyed to a vertical shaft, hl, turning in supporting-plates h2 of the truck-frame, while a cog-wheel, h3, at its lower end, gearing with a cog-wheel, h4, ofthe inner truck-axle, imparts motion to the pinion asfsoon as the trucks are moved in either direction. The `wheels h4 'are keyed to the truck-axles at opposite sides of the longitudinal axis of the car, turning thereby the pinions in opposite directions, which produces the intermeshing with the segments loading, the center of gravity of the platform being inside of pins i, the same will tip back on the trucks. By starting the car in opposite direction to its former movement the pinions carry the platform back into the oldi-position. Simultaneously with the return motion of the Y platform A a plate, G, withinclined upwardprojecting edges, engages a curved pendent plate, G1, hinged to the bottom of the plat` siderable expense for hands, and permits the rapid unloading of a whole train of platformcars, requiring merely the turning the central rods and the fore and return motion of the cars by the engine. 4

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, isl. The sliding lock-bolts e, in 'combination with sockets e1 of end platform A', to securely attach main platform A thereto, as described. Y

2. The longitudinal bottom rod E of the main platform, having spiral shoulders E', combined with sliding toothed segments D, having spiral springs f to throw them into gear with the truck-pinions, as described.

v 3. The toothed segments D, with lock-bolts e, having notches e2, in combination with hinged spring-dogs g, for retaining segments in gear and unlocking the platform, as set forth.

4. The combination, with pinions h, of the platform A and toothed segments D, as and for the purpose specified.

5. The rockers() of the platform,having projecting balancing-pins i, in combination with the guide-plates l and slotted ears l of the truck-beams F, for swinging the platform in tipped position for unload-ing and back, as specified. 1

6. The combination of plate G of the trucks, having inclined upturned edges, with the pivoted `pendent plate G of the platform, and springJdogs g, substantially in the ina-nner and for the purpose set forth.

, JOHN E. BEMIS.

lVitn'esses:

P. W. BEMIs, CHA's. D. COLE. 

